False twister



United States Patent FALSE TWISTER Hugh M. Brown, Clemson, S.C.,assignor to The Clemson Agricultural College of South Carolina, Clemson,S.C., a corporation of South Carolina Application August 9, 1956, SerialNo. 602,970. 4 Claims. (Cl. 57-71.-4)

This invention relates to false twisters used in connection with cardingmachines, draw frames, roving frames, and the like to condense andstrengthen strand like bundles of fibers during the handling thereof bysuch machines.

It is an object of this invention to provide a simple and effectivefalse twisting arrangement.

Other objects will appear in connection with the following specificationand the accompanying drawings which constitute a disclosure of theinvention.

In the drawings, Figure l is a part diagrammatic representation of myinvention; and

Figure 2 is a fragmentary view on the line IIII of Figure 1 looking inthe direction of the arrows.

In Figure 1, 'a pair of rollers on pulleys and 12 are mounted onparallel shafts 10a and 12a and are connected by a belt or endless band14 trained over them with a 180 degree twist in the belt between thepulleys so that the reaches 16 and 18 of the belt are substantially inface-to-face contact midway between the pulleys which rotate in oppositedirections as shown by the arrows, and either or both may be driven bysuitable means.

A bundle of filaments or fibers 20 in strand form passes through a guide22 thence between the confronting faces of the oppositely moving reaches16 and 18 of the belt 14 andon to suitable take-up means 24 which, forexample, may be a twister having a spool 26 rotating in the direction ofthe arrow A and revolving in the direction of the arrow B, but anysuitable conventional take-up or receiving means may be used instead.

Where the confronting faces of the belt 14 engage the material 20 theyrotate it in the clockwise direction, as indicated in Figure 1. Thisrotation produces false twist as indicated by the arrows 28 and 30. Anytwist produced according to the arrow 28 is neutralized as the materialpasses the belt 14, by equal and opposite twist according to the arrow30.

The belt 14 is formed of leather or any other material providing thenecessary frictional drag on the strand being twisted.

Since the shafts 10a and 12a are engaged in parallel relation, anydesired number of pairs of pulleys with connecting crossed belts may bemounted on these shafts at points spaced along their length.

I claim:

1. A yarn twister comprising a pair of spaced pulleys, an endless belttrained over said pulleys with the reaches thereof in crossed,face-to-face relation at a location between the pulleys, and means forguiding a textile strand between said reaches at the crossing location.

2. A yarn twister comprising an endless belt, means supporting anddriving said belt through two loop formations between which the reachesof the belt travel in opposite directions and in crossed, face-to-facerelation, and means for guiding a textile strand between the reaches ofsaid belt at the crossing location.

3. A yarn twisting arrangement comprising a pair of shafts arranged inspaced parallel relation, a pair of pulleys mounted upon said shafts inaligned driving relation, an endless belt trained over said pulleys withthe reaches thereof being crossed in face-to-face relation between thepulleys, and means for guiding a textile strand between said reaches atthe location of crossing.

4. A yarn twister comprising a pair of spaced pulleys, an endless flatbelt trained over said pulleys with the reaches thereof in crossed,face-to-face relation at a location between the pulleys, and means forguiding a textile strandfbetween said reaches at the crossing location,said pulleys being mounted on axes normal to the direction of draft ofthe strand.

References Cited in the file of this patent l UNITED STATES PATENTS2,098,974 Repass Nov. 16, 1937, 2,262,589 Peck Nov. 11, 1941 FOREIGNPATENTS 164,599 Australia Aug. 15, 1955

